398×3的积大约是______,304×4的积大约是______.
(1)398×3≈1200,
(2)304×4≈1200.
故答案为:1200,1200.
Looking out of the window of my room, ___ a tall tree in the yard.
A.there was
B.there were
C.I saw
D.there stood
下列药物中,可以制成胶囊剂的是
A.颠茄流浸膏
B.土荆介油
C.陈皮酊
D.水合氯醛